How do gentlemen usually speak to women?

I’m a Type C female member. I’m still fairly new here, and I get nervous around the other person’s elegant manner… Ideally, once we’ve become intimate, I’d like to drop the polite speech and act more spoiled and affectionate, but there are also gentlemen who are difficult to read when it comes to when that becomes acceptable. I’d be happy if you would tell me, “You can relax and talk casually!” When I’m invited to their room, I soften my words and attitude a little, but I’m sure they can probably tell that I’m nervous. If they call me over with a “Come here” and I snuggle up beside them with my head on their arm, I can get swept up in that unique atmosphere, haha. More specifically, we may have had a very sweet atmosphere in bed, with me letting myself go, acting spoiled, and making requests, but then after getting dressed again, I feel an indescribable embarrassment and try to rein in my improper behavior, slipping back into polite speech… (I’ll try to say something like “〇〇だよねぇ,” but stumble and end up saying something like “〇〇d…suyonee.”) Does this come across as too stiff to gentlemen? I really would like to close the distance and be more affectionate, but… Gentlemen, how do you treat a woman after you’ve become intimate with her?